Aryadeva’s Four Hundred Stanzas is a foundational work of Mahayana Buddhist philosophy. The first four chapters show how to rid yourself of the four incorrect considerations: considering something impermanent by nature to be permanent, something in the nature of suffering to be in the nature of happiness, something unclean by nature to be clean, and something lacking an impossible soul or self to have an impossible soul or self. Geshe Samten is resuming teaching this text in 2017 as part of the regular teachings at Vajrayana Institute.